Friday, April 5, 2019
Effects of Computerized Cognitive Training
Effects of Computerized cognitive TrainingCHAPTER FIVEDISCUSSIONThis chapter will discuss it will also discuss its public health significance and also report strengths and boundations of the review.5.1Summary and discussion of the evidence5.1.1To what ex tennert was the disturbance effective?The boilers suit aim of this dissect was to investigate the effects of computerized cognitive education aimed at improving cognitive make for in individuals at a high risk of developing mania. The ten trials that accept been included in this study atomic material body 18 spread widely across different countries. They vary enormously even deep down each subdomain analysed in terms of sample size, intervention characteristics (oerall length of date, number of nurture sessions and their oftenness) and outcome measures utilise. Participants were assessed on a number of cognitive outcome measures that were unrelated to the trained tasks, this was necessary to battle array that cognit ive betterment was not task specific as suggested by old studies (Ball et al. 2002). The outgrowths from these ten studies suggest that computerized cognitive facts of life is a promising approach for improving cognitive performance in persons with mild cognitive impairment. Participants showed improvements over a wide variety of neurocognitive outcome measures, such as memory, maintenance, executive function, working memory, visuospatial ability, everyday learning and speed of touch. Among these cognitive domains the most consistent improvements across all studies were observed in visual and verbal memory, attention, and executive function. Improvements in cognitive outcome measures suggests that individuals with MCI, despite cognitive deficit retain significant make out of neuroplasticity (Rosen et al. 2011) which makes them responsive to cognitive teaching.These findings are consistent with previous studies that demonstrate positive effects of cognitive training on cogn itive performance in individuals with MCI (Brum et al. 2009 Ball et al. 2002 Rapp et al. 2002). Previously it has been suggested that training gains are influenced by the frequency and duration of the intervention (Gates et al. 2011), however, findings show no difference in training effects among studies with longer duration of intervention and those with smaller duration (Rozzini et al. 2007).The inability to conduct a meta-analysis due to heterogeneity of diagnostic criteria, intervention characteristics and outcomes measured made it difficult to precisely identify which cognitive domains benefited the most from the training.It has been pointed out several times over the age that unless accompanied by behavioural, psychological or opposite changes, changes in cognition permit al oneness are not sufficient to justify a cognitive intervention (Woods, 2006). Out of the ten studies included, five studies assessed behavioural, psychological and everyday functional symptoms apart fr om neurocognitive outcome measures (Gaitan et al. 2013 Gagnon and Belleville, 2012 Finn and McDonald, 2011 Rozzini et al. 2007 Galante et al. 2007). The findings revea conduct positive effect of the intervention on some aspects of subjective measures of memory. Depressive symptom dozens decreased most consistently. This was fol beginninged by lessening in dread levels. However, no significant improvements were observed in self-reported activities of daily living or everyday functioning memory. This could be explained by the fact that as individuals were wishfully screened out in order to meet criteria for MCI, the participants were not stricken in everyday functional abilities and hence, it was difficult to assess the effect of training in terms of transferability to tangible innovation outcomes. No changes in well-being were reported. This is in contrast to the findings by Belleville et al. (2006) which reported positive uphold of computerized cognitive training on the part icipants feelings of well-being. This can perhaps be explained by the cellular cellular comprehension of pre-training sessions on stress, self-esteem and imagery that were part of the intervention in their study. Despite the importance of quality of look to patients and caregivers, none of the studies measured quality of life. According to Rozzini et al. (2007) although use of cholinesterase inhibitors has also been associated with reduced depressive symptoms, but computerized cognitive training supersedes pharmacological therapy as no negative or adverse effects of training begin been bring in participants, contrary to adverse effects and high dropout rates reported in drug trials in MCI (Clare et al. 2003).5.1.2To what extent were the effects maintained subsequently the intervention?Four studies included a follow up assessment ranging between 3 calendar months to a period of 12 months (Gaitan et al. 2013 Herrera et al. 2012 Galante et al. 2007 Rozzini et al. 2007) and one stu dy used a longitudinal design (Valdes et al. 2012) to ascertain if the training gains lasted longer, showed stability over time and hence, could possibly contribute to preventing afterlife cognitive decline. General cognitive function remained stable up to 9 months post training (Galante et al. 2007) recognition, attention and recall improvements were maintained at 6 months (Herrera et al. 2012) executive function (Gaitan et al. 2013), episodic memory and abstract cogitate (Rozzini et al. 2007) showed improvement trends at 12 month follow up and effects on speed of processing were maintained at 5 years after the end of the training programme (Valdes et al. 2012). Two studies showed reduction in behavioural disturbances such as depression and anxiety (Gaitan et al. 2013 Rozzini et al. 2007) at a 12 month follow up. Evidence suggests that computerized cognitive training is at least effective in slowing or impedeing the progression of cognitive decline and onset of dementia. Moreov er, it also suggests that if computerized cognitive training show cognitive gains, these improvements are likely to be preserved at follow up. In summary, computerized cognitive training justifies Swaabs (1991) sound out use it or lose it used to explain the relationship between declining neuronal activity and neurodegeneration.Overall, these results show findings connatural to a recent meta-analysis by Li et al. (2011) that showed improved overall cognition, domain specific cognitive improvements and positive training effects on follow up in the intervention group after receiving traditional cognitive training.According to literary works, computerized cognitive training has shown to be more effective than traditional cognitive training (Kueider et al. 2012), the results from this study suggest that structured computerized cognitive training produce significantly greater benefits in individuals with MCI as compared to those engaged in cognitively stimulating activities whole. Ev idence reveals that individuals with MCI that were randomized to intervention group showed bigger cognitive gains as compared to active control groups.5.2Public health SignificanceWith the elderly population of the world increasing rapidly, the numbers of older adults suffering from dementia are bound to rise. With 1 in 3 people above 65 years developing dementia, the number of individuals with dementia are projected to be as high as 135.46 million in 2050 (Alzheimers Disease International, 2013). Dementia has several annihilative consequences. The economic impact of dementia globally is quite alarming. This has diverted attention not unless towards the word of dementia itself but also towards preventive therapies specifically aimed at individuals with MCI. In 2007, the average cost of care for a patient with Alzheimers affection in the United Kingdom was estimated to be around 29,746 (Alzheimers social club, 2008). This makes the principles of disease prevention and health pro motion particularly relevant to dementia (Geda, Negash and Petersen, 2011). The prevention of a disease involves the identification of groups that are at high risk MCI indeed, is a high risk state for dementia particularly of the Alzheimers type (Alzheimers Disease International, 2013). Individuals with MCI are identified as high risk groups as they are 3 to 5 times more at risk of developing dementia than those without MCI (Alzheimers Society, 2014).As findings from this study reveal that many of the cognitive domains retain effects from as low as 6 months up to 5 years post computerized cognitive training and demonstrate delay in the progression of cognitive impairment. This can have positive implications for public health. This is because according to the Alzheimers Society (2007) delaying the progression of cognitive decline and hence onset of dementia merely by 5 years would halve the number of deaths that are directly attributable to dementia. It would also reduce the huge eco nomic cost associated with dementia care borne by the carers and the government. In addition, it would also cut down the costs borne by individuals or their carers as computerized approach itself is a cost effective approach as explained earlier.Growing evidence on the positive effects of computerized cognitive makes it a strong candidate to be on the priority order of business for policy making on tackling dementia in coming years. As demonstrated, much evidence in literature exists highlighting the positive impact of cognitive training on cognitive performance. NICE guidelines (2011) press the use of structured cognitively stimulating programmes for individuals with mild to moderate dementia irrespective of the drugs prescribed for the discussion of cognitive symptoms of dementia. Results from this study indicating the potential of computerized cognitive training and other relevant evidence in literature advocates that the use of computerised cognitive training for MCI patients can be included in the clinical practice guidelines. However, for that to be practically useful, there needs to be developed a structured computerised cognitive training supporter which can be commissioned when needed. Such service should identify in particular the software to be used, the duration and frequency of training sessions and sequencing of training sessions. Kueider et al. (2012) highlighted that older adults did not need to be tech catch in order to complete and benefit from the intervention. Moreover, these findings could have positive implications as contrary to the old teaching that older adults may not welcome the idea of using technology research suggests that older adults in many cases are the fastest growing users of computer and internet technology (Wagner et al. 2010). Moreover, as mentioned earlier, computerized cognitive training offer flexible and personalized approach as the difficulty level can be adjust according to the users performance, hence, keepi ng it engaging and enjoyable for users.5.3Strengths and limitations of the studyThe review was undertaken after a thorough search of literature available around the research question. To the authors knowledge this is the only systematic review to-date that has been conducted on this topic and includes up to date evidence. Another strength of this study is the stiff inclusion criteria in terms of study design. Only randomised controlled trials were included in the review. Although there were other relevant studies available having other study designs but according to the Cochrane review guidelines (Higgins and Green, 2011), the author decided to limit the final studies to randomised controlled trials. This helped to decrease bias and increase the methodological quality of the overall review. The author intend to synthesize the results from best available evidence.Although efforts were made to ensure a transparent and reproducible review, a number of caveats need to be mentioned that might have influenced the results.5.3.1Time frameThe time frame to conduct a systematic review was extremely limited keeping in view that there was only one researcher carrying out the entire procedure. Maximum time was spent searching through different electronic selective informationbases and other sources and reading the abstracts of different articles in an attempt to identify relevant studies. There may be a possibility of selection bias as the selection and screening of studies was done solely by one reviewer. However, in order to minimise such bias, the search and screening of articles was done twice.5.3.2Methodological limitations across the literature on computerised cognitive training common but notable methodological limitations emerge. One of the general limitations of this systematic review was small sample sizes used in majority of the studies. The small sample sizes led to reduced statistical power which may have obscured the detection of potential differences betwee n the groups. Larger groups could have allowed detecting smaller gains in performance.A second limitation was that several studies lacked an adequate active or placebo control group. Failure to include a proper control group may not only have had an impact on the results but also made interpretation of results difficult as attribution of cognitive benefits could have originated from other sources besides computerized cognitive training. These issues impact on the main aim of the study which was assessing how computerized approaches compare with traditional approaches. Only two studies used an active control group indulged in activities similar to traditional cognitive training (Gaitan et al. 2012 Herrera et al. 2012) making it difficult to directly compare both the approaches. The review supports findings from previous studies (Sitzer et al. 2006) that intervention groups show larger effect sizes when compared to waitlist instead of active control conditions. Several studies report ed inclusion of participants receiving pharmacological therapy (Cholinesterase Inhibitors) raising the possibility that the cognitive gains were not because of the training solely but were a result of the synergistic effect between pharmacological therapy and training.An important limitation of this study was the scarce availability of data for individuals with mild cognitive impairment despite the relatively large time span covered. Furthermore, although most studies used the Petersens criteria to diagnose and assess individuals with MCI but modifications in the exact application of this definition existed e.g. the use of MMSE- tons one of the included studies used MMSE scores 24 () while one study used MMSE scores of 23 ().Additionally the heterogeneity of the outcomes measured across studies made cross-comparison difficult but at the same(p) time highlighted the need of developing robust research designs for cognitive training intervention studies.According to the inclusion c riteria, only studies that were randomised controlled trials were to be included. This led to the exclusion of many quasi-experimental studies that were related to the research question and that could have contributed to the results (Talassi et al. 2007 Belleville et al. 2006 Cipriani et al. 2006 Tarraga et al. 2006 Schreiber et al. 1999).5.3.3 Dual vs Single person data lineThe Cochrane Collaboration (Higgins and Green, 2011) expects each study included in the review to be data extracted by at least two independent researchers who are cover to the study authors and institution from which the study has been published. This however, was not possible owing to the time limitations and practicality of an MSc degree and therefore, data extraction was carried out by a single reviewer. According to Edwards et al. (2002) study screening and data extraction by two or more researchers increases the reliability and accuracy of the systematic review.5.3.4Language limitationThe destiny of stu dies being published in English language led to the exclusion of two studies deemed relevant by their abstract as the body of text was published in German and Spanish (Ott-Chervet et al. 1998 Fernndez-Calvo et al. 2011).SummaryThis chapter discussed on the results that were generated in the previous chapter. Computerized cognitive training had positive impact on multiple aspects of cognition, including behavioural and psychological symptoms. The effects of training on multiple outcome measures were retained for as less as 6 months to 5 years after the end of the training programme. This showed that the effects of training were not only spry but also halted cognitive decline. These findings were extremely important from the public health.
Thursday, April 4, 2019
Evaluating Supply Chain Management in the Volkswagon Brazil resende
Evaluating Supply Chain Management in the Volkswagon Brazil resendeThe RESENDE pulverization of Volkswagen federation in BRAZIL brought revolution in the automobile perseverance around the globe the grind has wholly unique communicate string cast and was first of its kind. The resend sic was in addition known as the renascence of Volkswagen comp alone as later the Auto Latina was ended between Volkswagen and ford as Volkswagen go with has no manufacturing plant to manufacture its trucks and b intents so resend was built in Brazil in 1995. The Volkswagen has around 400 suppliers who use to publish contrary spare go bads for the manufacturing of trucks and buses the Brazilian foodstuff was renowned for Volkswagen trucks and buses, Volkswagen club apologise their suppliers to 8 and then had contracts with them, the whole pedestal of Resende mill was a Modular syndicate, the eighter suppliers would be glide path in with the supplies and then neutering that is assembling it up, it was like a mini shops they own inside the grind that is they were the manufacturing business and as well as the assembling was d whiz by them, this model was very new to supply stove that was accomplished thither, no organizeer of Volkswagen caller-out was there except the fiber control as it is one of the important factor to check. The supply scope model helped them to cut their force fol minor and stimulate them avail to lot their buses n trucks at deject price that how they made their customers and the competitors were non able to disdain their prices as they were manufacturing the parts as well as assembling them the good thing almost Volkswagen Resende plant was that they were hiring wear upon at cheap greets which helped them to cut their comprise. Just as the factory started operating the nearly important person was squeeze to leave the organization as the Jos Ignacio Lpez de Arriorta was working with gm and left-hand(a) gm joined V olkswagen. As when they started with the resend factory the claim did by Volkswagen was lawfully accepted ant Volkswagen paid a good amount for it as gm had did the claim that lopes left gm with some important documents miss and data as they said he spy us and the resend factory was to a greater extent like their judgement which Jos Ignacio Lpez de Arriorta started their so just at the initiation the big question mark was with this factory, more over Jos Ignacio Lpez de Arriorta was coerce to resign and had left the ships association leaving the post of transaction management which was a loss to the factory and have the big importance to the resend factory.VWs supply chemical chain scheme according to Michael Porters strategic frameworkThe Resende factory of Volkswagen company known as the spiritual rebirth of Volkswagen company established in Brazil known as modular consortium was very unique in sense of supply chain as only new frame work was being applied to it as it wa s a junction where all suppliers of dis correspondent companies come and make up the whole product (trucks and buses) that is they work in a way that there were different suppliers who were bringing up the parts of trucks and assembling them up that is suppliers were also the labors and was responsible for the production as well as assembling the trucks and buses they come and work in the factory. Discussing about supply chain model used by Volkswagen company in their Resende factory was a entirely new supply chain strategy and if we talk about it in the light of Michale Porters strategic frame work it would be as fol offsetsThe curse of the entry of new competitorsThe Resende factory of Volkswagen company was the first one in entire automobile industry having this kind of supply chain model that is a modular consortium model. The main point of attraction to the automobile world was the management of operations in the plant as the plant was first of its type more over one whorem aster take it as an test so at that point of time the curse of a new competitor to enter was up to 0%. As the concept has bring revolution in the traditional supply chain strategies in automobile industry so at the beginning the competitor was not at all the threat but the execution of the supply chain model could create threats as just at the beginning the companys operation manger left so the competitors are always looking for something which they can use as an advantage to its competitor.The intensity of competitive rivalryThe intensity of competitive rivalry was there in the form of General Motor for Volkswagen Company because of their lawsuit. the operation manger Jos Ignacio Lpez de Arriorta left so at that time things become difficult for them but Volkswagen mange it efficiently merely the suppliers which was the main theme of this Resende factory the modular consortium was all about the supplier which was cut carry out to eight from cardinal hundred they have to be a go od and strong bonding with them as if any one of them left the trucks and buses would be hard to finish as the company has no plant to amaze the products after their joint venture with ford ended so the suppliers were very important to Volkswagen. The anformer(a) competitive advantage competitors of Volkswagen had was that the suppliers with Volkswagen was due to the relationship of Jos Ignacio Lpez de Arriorta as in general motor he was the managing director of Latin America state so he use his reference in Volkswagen company so he was forced to resign from the company the suppliers can also leave but fortunately this never happened and the Resende factory known as rebirth to Volkswagen name a new life to Volkswagen company indeed.The threat of substitute products or servicesThe threat of substitute was there in Brazil as it was the largest market of all and Volkswagen companys the Resende factory was a totally new thing in the industry of automobile industry more over the suppl y chain strategy they used was the first to be used in any factory the unique idea they applied worked for them as they didnt had any employee of Volkswagen company to work in the plant it was totally outsourced plant as the suppliers was also the labor not only responsible for render the parts more over fixing them up as it was a solely new strategy of supply chain utilise by the Volkswagen company. The only people by Volkswagen company were the quality control departments they were responsible to give the perfect quality so that their trucks and buses be the strength to the company not the strength of the competitor this model of supply chain worked and helped Volkswagen to cut its labor cost which help them to let down their prices compared to its competitors so the threat of a substitute was around 0% as the competitors were manufacturing their trucks and they cannot lower their prices so Volkswagen company was going good.The bargaining creator of customers (buyers)The Rese nde factory of the Volkswagen company was a revolutionary factory for the world the plant was using a supply chain strategy that really help them in generating revenue as they cut their suppliers from 400 to 8 and they were the suppliers as well as the assemblers for the trucks and buses and if any part for not perfectly fitted or had a problem the loss would be barred by the supplier the Volkswagen company were generating revenues out of the supply chain strategy they have implemented in the plant moreover if we talk about the barging power of the customers we can severalize that the factory was saving a lot to Volkswagen company as their cost have lower down a lot so they can give the trucks and buses at lower cost which was the thing that its competitors cannot compete as they were making up the product by themselves and buyers were getting advantage for it they dont need to bargain as the trucks and buses were already at lower costs. The customer were getting at good advantage on buying Volkswagen trucks and buses so the bargaining power of the buyer didnt affect much on the Volkswagen company.The bargaining power of suppliersAs they cut down their suppliers from four hundred to eight the suppliers working with them in the Resende factory would be having good relations with the Volkswagen company and more over they would be having some advantages to be the part of the Resende factory as they were infer to produce the parts and assemble them up for Volkswagen company so there would be some interest of their also as they were the part of the Resende factory and making up the trucks and buses for Volkswagen company and that was giving a benefit on cost to the Volkswagen so their trucks and buses were less in cost compared to other companies in the Brazilian market, Volkswagen company had intend about it, as they were dealing with a good number of suppliers and above all they dont own any plant for making the parts of the truck as they were totally out sour cing them and the operations as well as the assembling were done by the suppliers, they have been critises by one of the worker on just outsourcing everything, thence they have to be very good at it and have to implement the supply chain strategy very well more over there were no employee of Volkswagen company working there, so everyone working there under one roof would be wearing very(prenominal) uniform having same salary packages and more over they dont want any labor union to be made up as they were catering the whole of brazil and the trucks were very famous around brazil.Analyze the ways in which VW could employ technology across the different supply chain processes.As the Resende factory of Volkswagen was something really innovative and more unique was the supply chain model implemented on the factory which was assembling of the trucks as well as the production was the duty of the suppliers, Jos Ignacio Lpez de Arriorta designed it in such a way that no labor cost was to be incurred from Volkswagen company as there were no Volkswagen workers involved in the factory except the quality control supervisors as the suppliers were bounded for displace up the parts of trucks and buses the factory is producing the technology they used or we can say that the supply chain strategy they implies in this factory was really working for them as they have cut their cost in sense of labor cost more over the assembling was no more there issue as now it was the problem of the suppliers. The Volkswagen company c use to hire the labor through lowest bidder and the new technology was working so good that they planned to apply this strategy of supply chain to their other factories in different parts of world and the benefit from this supply chain strategy is for the developing countries as they can use the idea the modular consortium as it is the hazard of suppliers who are producing as well as assembling the trucks and busses for them and Volkswagen company is decreasi ng its labor cost at good. The main idea was like the contractors which were suppliers was totally responsible for making up the part which is required and fixing it perfectly as if the part fitted or purchased not sit right than the company which was responsible for putting the part bare the loss the Volkswagen company were really generating revenues with the factory, in the factory there were around eight suppliers who were operating there mini shops in the factory the company was able to get supplies in low rates so they can sell the busses and trucks at low price and attract the customers towards them and the other competitors of Volkswagen company was not able to compete as they were producing everything by them self which was hard for them to cut the costs and therefore cant lower the prices and that helped Volkswagen company to generate their revenues, and this supply chain strategy was a success for Volkswagen. esteem current global supply chain challenges to this VW supply chain model.Global Supply Chain ChallengesAt the Resende plant of Volkswagen totally new model of supply chain was implemented which was a risk because the Resende factory was first in nature to its own moreover it was more important to Volkswagen as it was a rebirth to the Volkswagen company as their Auto Latina was ended so their factory at Brazil that is Resende was the only forecast as they did not had any factory to produce trucks and buses, the supply chain model was a totally new idea in the industry of auto mobile Modular consortium just at the starting it faced a challenge to its survival in the form of its operation manger Jos Ignacio Lpez de Arriorta left because of some lawsuit between Volkswagen and General Motors.Just in time inventory. different supply chain strategies can help a business minimize their costs and focus on their main business that is there core competencies and more over it cut the time waste on waiting for the suppliers and sometimes not perfect sup plies can make company suffers a lot and hold out losses moreover they can take away your customers from you, can give the competitive advantage to the other company that is your competitor. There are several strategies for supply chain practiced by many organizations. to a greater extent over there are several global supply chain challenges.The first challenge to the resend factory was to gestate having totally new model of supply chain as the modular consortium was about the suppliers would be working as the labor in the factory no Volkswagen employee would be there and they were suppose to perform the activity of suppliers as well as labor for the company this method reduce the cost of labor to the Volkswagen company moreover manufacturing all the parts were more costly than to just buy them up.As the world is moving so rapidly technology is changing with respect to time so as the new threats are there supply chain has a good growth in coming future as many industries working a round the world is not making up all its products there are things they supply and get supplies to make up their end product which plays an important use in the companies having their branches all around world have to look for suppliers and the supplies they would be getting should not increment their cost or reduce their core competence as the competition is very tough so therefore the supply cost should not exceed as your revenue decrease.As the VW supply chain model was based on suppliers as if they lose any of the supplier their truck was impossible to shape as they them self was not producing to that scale as it was just like a junction where different suppliers were bringing up the part they manufacture and assembling them which helped VW to cut their cost more over to sell their trucks and buses at low rates as compared to its competitors VW was facing some supply chain challenges as they were supplying all the parts and the suppliers were responsible for fixing them moreo ver in content of damage they have to view as it if any there were no blue collar worker of VW at the factory except quality control as it was a point at which its competitor can have advantage so the whole idea was a supply chain game. Economic challenges was their more over in case of natural disaster they were the one who have to faced it all as the factory was not producing anything so it was a challenge to maintain a good relations with their suppliers so they dont stand against them.CONCLUSIONthe supply chain model faced difficulties in the starting as the main operation manager Jos Ignacio Lpez de Arriorta was forced to leave the company because General Motor claims that Jos Ignacio Lpez de Arriorta has left the organization with some very important documents more over the resend factory was somewhat similar to a new project general motor was working so Jos Ignacio Lpez de Arriorta was forced to leave the company, just at the beginning the Resende factory faced a loss but t he supply chain model fits right and Volkswagen generated good revenue out of it and give out its trucks and buses at low cost compared to other automobile companies in brazil as the model helped them to cut their labor cost out of all the conflicts and issues the Resende faced it was a success at the end and the rebirth of Volkswagen succeeded.
Application of Gas Chromatography in Pharmaceutical Analysis
Application of Gas Chromatography in pharmaceutical abbreviationChromatography is a physical method acting of time interval in which comp onenessnts to be separated atomic number 18 distributed between two manakins, one of which is stationary kind while the new(prenominal) mobile phase involve in a definite direction. The stationary phase may be a solid or a liquid supported on a solid or a gel. The mobile phase may be bollockseous or liquid. The basis for mishandle chromatography separation is the distribution of a savor between two phases. one of these phases is a stationary bed of large surface discipline, and the other phase is a gaseous state which percolates through with(predicate) the stationary bed. The physical state of the mobile phase distinguishes the fundamental property of a chromatographic separation. Liquid chromatography (LC), gas chromatography (GC) and super critical fluid chromatography (SFC) all named for the state of their single mobile phases. The first person to chromatography was Tswett (1872-1919) the Russian chemist. He utilise chromatography from the Greek for colour chroma and write- graphein to pick out his work on the separation of coloured plant pigments. Until 1930s chromatography in the form of thin-layer and ion-exchange chromatography became a on a regular basis used proficiency. In 1940 development of partition chromatography and paper chromatography followed by the first disclosure of effective gas chromatography (GC) by Martin and his co-worker James in 1953. GC is a technique for separating volatile substances by percolating a gas stream over a stationary phase. It is a technique that revolutionized analytical chemistry. GC has been employ successfully to numerous compounds in variety of fields. Headspace GC has been used since the 1980s, but only recently has it fashion part of mainstream of pharmaceutical analysis. In this essay GC technical aspect and its application for pharmaceutical decimal an alysis has been explained. Moreover, the comparative advantage over other techniques and the disadvantage of using GC has been in addition discussed and reached on some conclusion.2. Gas Chromatography2.1 Technical AspectIn GC the components to be separated argon carried through the tugboat by an inert gas. Here the mobile phase is a gas, often nitrogen, but some quantifys helium, hydrogen or occasionally another gas. It is called the carrier gas. GC is equipped with standard oven for temperature programming, rake/split less injection ports and flame ionization detector. The standard mixture is partitioned between the carrier gas and a non volatile solvent (stationary phase ) supported on an inert size-graded solid. The solvent selectively retards the sample components, accord to their distribution coefficient, until they form separate bands in the carrier gas. These component bands leave the column in the gas stream and be recorded as a function of season by a detector. This elution technique has the following advantages The column is continuously regenerated by the inert gas phase.Usually the sample components are solely separated and mixed only with an inert gas making collection and quantitative purposes easy.The analysis time is real short.In general GC is a force outful and widely used technique for the separation, identification and quantitation of components in a mixture.In this technique a sample is converted to the vapor state and a feed ining stream of carrier gas sweeps the sample into a thermally -controlled column. In GC the column is usually packed with solid particles that coated with a non-volatile solvent. Retention time is defined from injection of the sample to time a particularized sample component is observe. After exiting the column the separated components are detected and a detector response is recorded. Polarity and boiling points of the components are as salubrious as vital properties in GC separation. While polarity is the major factor governing separation the boiling points of components of the sample also correspond a significant role in determining the retention time. Components with higher volatility have sink boiling point.2.2 Advantages of GC2.2.1. SpeedThe entire analysis is completed less than half an hours. The use of gas as the moving phase has the advantage of rapid equilibrium between the moving and stationary phases and allows high carrier gas velocities to be employed. Separations requiring only seconds have been reported, however, analysis time of minutes duration is more common in GC. Preparative scale separations, or resolution of wide-boiling complex samples may require hours.2.2.2. solvingThe separation of some compounds such as methyl esters of stearic, oleic and linoleic acids by other techniques is extremely difficult or impossible. The boiling point differences are negligible in that the compounds vary only in degree of unsaturation. By using selective solvents, h owever, GC can take into account resolution impossible by distillation or other techniques.2.2.3. Qualitative AnalysisThe retention time in GC is that time from injection to skin rash maxima. This property is characteristic of the sample and the liquid phase at a given temperature. With proper flow and temperature control, it can be reproduced to within 1% and used to identify each peak. Several compounds has only one retention time. This retention time is not influenced by the presence of other components.2.2.4. Quantitative AnalysisThe area peak produced for each on chromatogram is proportional to concentration of the peak in GC analysis. This can be used to determine the exact concentration of each component. Accuracy attainable with GC depends upon, detector, integration method and sample concentration.2.2.5. SensitivityA major reason for the extensive analytical application of GC is the sensibility available. The simplest forms of thermal conductivity cells can determine dow n to 0.1 %.The flame detector easily sees parts per million, and the specific electron capture and phosphorus detectors can measure parts per billion. An advantage of this extreme sensitivity is the excellent size sample or micro liters of sample are sufficient for complete analysis. This is indeed hunt down analysis is also easily achieved. It is simple to operate and understand. Interpretation of the data obtained is also rapid and dandy forward. The cost of GC is very low compared to the data obtained.3. Application of GC in Pharmaceutical AnalysisThe major success of the application of GC in pharmaceutical quantitative analysis is firstly due to the very high efficiencies of separation power, secondly to the extreme sensitivity of the detection of even very nice amounts of separated species and finally to the precision and accuracy of the data from quantitative analyses of very complex mixtures. GC analyses are also easy to automate from sample introduction to separation. B ecause of the supra main advantages and its short analysis time and reliable results GC is used as quality control purposes in the pharmaceutical industry. In fact pharmaceutical analysis generally involves two steps separation of the compound of interest and quantitation of the compounds. The better the separation the easier the quantitation. GC detectors have different responses to each compound. In order to determine quantitative amounts of various compounds in a separation the detector must be calibrated using standards. Standard solutions of sample are injected and the detector response recorded. equality of the standard and sample retention times allows qualitative analysis of the sample. Comparison of the peak area of the standards with that of the sample allows quantitation of analyte. Due to this fact, GC is widely used as a crook analytical technique in pharmaceutical quantitative analysis mostly used in for the determination of organic fertilizer volatile impurities an d nicotine level during drugs formulation.3.1. Determination of Organic volatilizable Impurities by GCOrganic Volatile impurities are relief solvents that are used in and are produced during the synthesis of drug substances, or in excipients used in the production of drug formulations. Many of these residual solvents generally cannot be completely remove by standard manufacturing processes or techniques and are left behind, preferably at low levels. Organic solvents such as acetone, ethyl acetate, isopropyl alcohol, methanol, tetrahydrofuran and toluene frequently used in pharmaceutical industry for the manufacturing of Active Pharmaceutical ingredients therefore ,in manufacturing drug substances and from one or more steps of the synthetic process, volatile solvents can be retained in the end products. Most of the time ethanol and acetone are used in the preparation of the polymeric coating of tablets. On other hand isopropyl alcohol is used in the vitreous silica of the active ingredient while ethyl acetate is a process solvent for the gel forming polymer. low-toned levels of these organic solvents are inevitably present in the drug product even after drying process. These organic volatile residuals affect physiochemical properties of a drug, such as particle size, dissolution rate and stability, but also can present a serious potential health hazard. Very often these solvents, referred to as residual solvents, are carried to the pharmaceutical preparation concerned and making their determination very important. Therefore, GC is superior to other techniques for analysis of these residual solvents. It provide good retention and separation at low oven temperatures. Due to the above fact the content of residual organic solvents in pharmaceutical industry is routinely measured by GC technique.3.2. Determination of Nicotine by GCBecause of its rapid and accurate analytical result GC is used to determine the nicotine level in pharmaceutical drugs formulation. GC applications in combination with other techniques are also vital in pharmaceutical industries for isolation and characterization of volatile compounds.Currently the use of GC in pharmaceutical quantitative analysis is very usual and include the analysis of samples of active pharmaceutical ingredients and their intermediates as well as in- process testing for residual solvents to optimize the drying process.4. Discussion and Conclusion4.1. DiscussionThe disadvantage of GC are that the components of the sample must be volatile at temperature at which they will not decompose. As there are more involatile materials than there are volatile, and volatility immediately places a serious bound on the field of application. In addition to these GC is also strongly retained components travel very slowly, or in some cases do not move at all. However, this difficulty can be overcome by using temperature programming of the column to decrease elution time. Temperature programming is the increas e of temperature during an analysis to provide a faster and more adaptable analysis.4.2. ConclusionEven though, GC has a few bound in field of application due to its high detector sensitivity and high resolving power it is generally used extensively in pharmaceutical industry both in research and quality control purposes.
Wednesday, April 3, 2019
Effect of Eccentricity on Nonlinear Galloping of Cables
Effect of Eccentricity on Nonlinear Galloping of C adequate to(p)sThe Effect of Eccentricity on the Nonlinear Galloping of Cables under Combined arc Flow and Support ope ration in 11 Internal, External and Parametric Resonance developAmir Jalali Saman SadripourDepartment of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran.Galloping of agate lines is a kind of self-excited quivering and characterized with high bountifulness and low frequency. In this paper for investigating the nonlinear galloping of an inclined ancestry, considering flexural and torsional stiffness, a transmission line-beam feigning is used. The rubbishd credit line is formulated under the effectuate of combined bullock carry and restrain effort. Assuming low droop to span ratio and victimization physical parameter values of the wire, the establishment equivalence of achievement is obtained as a classical comparisons of the perfectly tensile cable, plus a further equati ng governing the twist enquiry. These cardinal degrees of freedom system is discretized via the Galerkin method, by taking one in-plane and one out-of-plane modes as trial function. Two resulting non-homogeneous ordinary diverseial equations atomic number 18 coupled and comprise quadratic and cubic nonlinearities in both velocity and displacement terms. By using ternary scale method for 11 subjective resonance and 11 external resonance, a number one lay amplitude-phase modulation equation, governing the slow dynamic of the cable, is obtained. In this paper the twist around hurry and the eccentricity of the iced dent be set as control parameters. Without setting the eccentricity, the value of amplitude is increased as the nose speed is increase. nevertheless considering the eccentricity reduced to firstly increasing and then decreasing the amplitude.KeywordsGalloping, Stiff Cable, Wind Flow, Eccentricity, Perturbation methodIntroductionCables atomic number 18 light and pliant structures which are used commonly in many engineering structures. Because of their low essential damping, Cables are exposed to wind-induced vibration. Galloping is a classic phenomenon of streamlined instability of flimsy structures having non-circular scar separates analytical. A circular cylinder, with perfect symmetry will not exhibit galloping, though galloping is a common occurrence of on ice-laden cables, where the ice introduces the required asymmetry 1. Galloping is characterized by low frequency and high amplitude vibration and has many roles in the field of cable vibration. The effects of galloping on a transmission line is dependent upon the severity and duration of the galloping grammatical case besides typical problems are phase to phase flashover causing outages and arcing equipment casualty to conductors, loosening of tower bolts and damage to suspension and tension clamps, spacers and vibration dampers and, in more or less critical cases, struct ural damage to towers 1. In order to hold on these damages, it is important to study on this kind of vibration.The initial galloping model was proposed by Irvine 1, this model is establish on the low wilt to span ratio. The first studies of galloping considered it to be single degree of freedom (mono-modal galloping) Den Hartog 1 and Parkinson 1 introduce a model by term the vertical educational activity for galloping motion. Jones 1 and Luongo 1 proposed a twain degree of freedom model by consideration vertical and plain motion and the interaction amid them. In a major benefit in (2010) Blevins 1 and Yu et al. 1 analyzed the effect of rotation on galloping and have anchor that the rotation plays an important role on the initiation of galloping under sure anatomys. After that Yu 1, 2 proposed a three degree of freedom galloping model (vertical, crosswise and rotational) by consideration eccentricity of ice. The 3-DOF models have been used widely in galloping synopsis us ing analytical and finite element methods. All these models consider the cable as a flexible structure and sacknot consider the digression effects. Luongo 10-12 proposed a new model for considering both bending and rotation. This new model is based on the curved-beam theory and importance of consideration bending effects has been be in linear 1 and nonlinear regime 1 under internal resonance conditions, devoting attention to the comparison between analytical and numerical approaches 1.In the face up paper, to investigate the effect of eccentricity on the iced cables which exposed to wind flow and support motion simultaneously, a nonlinear curved beam model 1 is introduced. The proposed model in this paper, is a nonlinear model of an inclined cable which able to twist and displacement in three normal, bi-normal and tangential directions. By using strain-displacements relation and based on Hamilton rule equations of motion can be derived. The satiny forces are modeled referring to the quasi-steady theory, and they depend on the mean wind speed and on the cant over of attack. Moreover, according to the property of the sample cable and Galerkin method, by considering one in-plane and one out-of-plane modes, a simplify two-degree of-freedom (normal and bi-normal) model with consideration of torsion, bending and eccentricity has been obtained. The two resulting equations are second order, non-homogeneous, clip-periodic, ordinary differential equations and coupled with quadratic and cubic nonlinearities, both in the displacements and velocities. By using multiple scale method for 11 internal resonance between the in-plane and out-of-plane modes, and 11 external resonance between forcing and natural frequencies, a first order amplitude-phase modulation equation, governing the slow dynamic of the cable, is obtained. In this paper the wind speed, the eccentricity of the iced section and the amplitude of the support motion are set as control parameters.The paper is organized as followsIn the section 2 the equations of motion are formulated based on Hamiltonian theory. The reduced equations of motion are derived with simplifying assumption in section 3. By defining the non-dimensional parameters, Dimensionless equations are obtained in section 4. In the section 5 slick forces are formulated based on quasi-steady theory. Discretizing via Galerkin procedure is performed in the next section and the perturbation analysis is carried out in section 7, where the amplitude modulation equations are derived. Finally for a sample system, some conclusions are drawn in section 8.Mechanical modelThe cable is modeled as a body made of a flexible centerline and rigid cross-section(prenominal)s restrained to remain orthogonal to the axis (shear-undeformable beam). It is imitation to be uniformly iced and loaded by a wind flow of mean velocity , blowing horizontally. For better description of cable-beam model, the choice of coordinates is made as followin g directions 1,2 and 3 denote tangential, normal and bi-normal directions of transmission line, respectively. Four different variants are considered. (a) the configuration, taken by the body at time and the cable is under the action of gravity including ice, in this configuration the cable is in a vertical plane belong to (x,y) plane so the cross-section is in the (y,z) plane. (b) the configuration, in this configuration the eccentricity of cross-section due to ice work is considered. Because of eccentricity of iced transmission line, the configuration rotates the initial angle from shape . (c) the reference configuration is considered by the body at time , it is assumed in which still aerodynamic forces act on transmission line. Due to static aerodynamic forces the cross section rotates the angle from the shape , this configuration is described by planner curve and by the cross-section inertial principal lead assumed to be coincident with the Frenet triad 1. (d) the act ual configuration is considered at time , it is assumed all forces including static and dynamic forces and support motion act on the body, The actual configuration of the body is described by the non-planar curve and the inertial principal triad . Because of the dynamic part of aerodynamic force, the dynamic rotation and transport is described by and the displacement vector field , respectively.(1)(2)According to 2, 3, assuming low sag to span ratio, the Lagrange strain-displacement kinship can be compute as below(3)(4)(5)(6)Where is stretching, is torsion, and are bending strains, respectively and are the components of displacement vector in basis . Is the initial curvature of the cable and is the twist of the cross section. All the displacements and twist depends on the curvilinear abscissa and time . found on 1 the equations of motion were derived via extended Hamilton principle by ignoring the shear resistance of the curved beam.(7)Where , are the first hour of area about and axes. Is tensional, is the torsional, and are the bending forces all at time . The property . denotes derivation with respect time and represent eccentricity of cross section about the and axes, respectively is the density of transmission line is the area of cross section , , , and are the axial, bending and torsional stiffness, respectively , and are aerodynamic forces , , and are structural damping coefficients denotes the cable length. Represents the horizontal distance between adjacent towers is sag at the mid-span.Based on 1 by reducing strain-displacement equations (1) (1) to equations (1) (1) and substituting them into equation (1), the equations of motion (1) (1) with boundary condition (1) (1) can be obtained in the quadruple directions.(8)(9)(10)Tangential direction(11)Normal direction(12)Bi-normal direction(13)Torsional direction(14)(15)(16)(17)(18)Where sign denotes differentiation with respect to .Reduced equations of motion Since the transversal-to-longitudinal (or torsional) squared frequency ratio is small, stretching and torsion are quasi-steady, so that inertial and damping forces can be neglected in the relevant equations. By substituting Longitudinal displacements are consequently statically condensed as (1) where the boundary conditions (1) have been used. Furthermore , in equation (1) are assumed as and respectively. Thus equations (1) and (1) can be simplified as(19)(20)According to the actual transmission line properties, and are real small compared with area of cable cross section , therefore and in equations (1) and (1) can be ignored. Since the equation in twist direction cannot be condensed such a simple way, it is convenient to use twist equation as an ancillary equation in the following. By substituting (1) in equations (1) to (1), the equations of motion can be obtained as equations (1) to (1) by boundary condition (1) to (1).(21)(22)(23)(24)(25)(26)Since the equations of moti on (1) to (1) have non-homogenous boundary conditions, by considering transformation (1) the system can be transform into an equivalent system with homogenous boundary condition.(27)In which is quasi-static and is dynamic component of the solution and they can be obtained by answer the linearized, non-homogenous system that is describe planner, linear, static of the cable, when a vertical unitary time-independent motion of the support is applied 1.(28)(29)The particular solution of equation (1) can be obtained as follow(30)(31)(32)Dimensionless form of equationsBy defining non-dimensional parameter (1), dimensionless forms of equations of motion are obtained as follow(29)(30)(31)(32)In which all * Superscripts have been eliminating in order to simplicity and non-dimensional parameters are introduced as follow(33)Where the index n used instead of value and .Aerodynamic forcesIn order to promote a simple aerodynamic model, simplifying assumption should be considered. a) The quasi -steady theory is pick out 1, b) the curvature of cable is neglected, c) the twist angle is accounted in loads but the effect of flexural rotation is neglected, d) the ice is uniformly cover the cable develop and e) the aerodynamic couples are neglected. Based on these assumptions aerodynamic forces and can be obtained. As shown in figure (1) wind blow with speed to cable plane, expression (1) denotes projection of this speed on the plane of cross section. The angle of attack introduced by the angle between direction of the component of wind speed on the cross section and a reference direction (hear the reference direction is adopted axis ), equation (1) and (1) express these concepts.(34)(35)Based on quasi-steady theory the aerodynamic force can be calculated by(36)Where is angle of attack, is the relative velocity between the wind speed and structure speed, is air density, is characteristic radius of section, the modulus of relation speed, and are victimize and drag coe fficient respectively and theyre dependent on the angle of attack and written as(37)(38)In which is defined as relation (1) and are the aerodynamic coefficients in reference configuration that are obtained by experimental results.(39)By substituting these expression into (1) and projecting this equation on direction and the components of aerodynamic force and can be calculated as follow(40)For and where is a vector that collecting all the invariable components, , and are the coefficients that depend on the , and their derivati
Tuesday, April 2, 2019
Theories and Models of Memory
Theories and Models of MemoryBaddeley and Hitch developed another warning of short-run store which is called works keeping. The distinction between short-term storage and functional fund is that short-term memory is frequently intaked interchangeably with work memory however the devil of them should be utilize separately. Short-term memory refers to just the temporary storage of development within the memory whereas working(a) memory refers to the processes that argon used to temporarily organise, manipulate and store tuition. Their position in like manner put fore instead of the short-term memory creation a wiz store, it is in fact an active processor containing legion(predicate) different types of stores- the of import executive director, phonological loop, visuo-spatial fieldpad and episodic buff.Central executiveThe central executive is the main and some important component of the model which cigaret be best described and known for attention. It is resp onsible for controlling and observe the operation of the slave systems known as the phonological loop and visuo-spatial sketch pad that have limited capacity, and relates them to the long memory. Within the central executive, it decides what discipline needs to be attended to and which parts of the working memory to institutionalize this in instituteation to in order to be dealt with. Also, it is its function to decide what working memory pays attention to whenever someone is completing an occupation and another activity comes into conflict with it. The central executive basically directs attention and puts the activity most important as priority meaning it selectively attends the important stimuli and ignores the least(prenominal) important.Despite how important the central executive is in the working memory model, we know less about it compared to the twain subsystems it controls. It is Baddeley who suggests that the central executive functions to a greater extent like a sy stem that controls attentional processes, rather than a memory store. This is unlike the visuo-spatial sketch pad and the phonological loop which are two specialised storage systems.Phonological loopThe phonological loop holds speech-based information for 1-2 seconds and is composed of an articulative control process and a phonological store. The articulatory control process acts as an intra sort out voice which practices information from the phonological store by repeating it again and again. An example of this is remembering a phone number we have just heard. As long as we keep repeating it in our heads, we can retain the information in working memory. The phonological store on the other hand is the cozy ear. Spoken words enter the store directly meanwhile scripted words must firstly be changed into a spoken label before they can enter the phonological store.The working memory model has strengths and is supported by Shallice and Warrington (1974). Theyfound support for the wo rking memory model through with(predicate) their case study of KF. KF was a brain damaged individual who had an damage short-term memory. He struggled to immediately guess words which were represented literally, precisely was fine with ocular information. This suggested that he had an intact visuo-spatial sketchpad but an impaired articulatory loop, therefore showing evidence for the working memory models view of short-term memory. This finding couldnt be explained using the multi-store model of memory, which therefore put forward that the short-term memory was just one system.Visuo-spatial sketchpadThe visuo-spatial sketchpad is known as the inner eye and refers to what things look like. It also processes the temporary storage of spatial and visual information. It can manipulate visual and spatial information held in the long-term memory, and images in two and trio dimensions, for example hatful can recall someones face they know from long-term memory in only two dimensio ns and can also imagine walking around their kitchen in three dimensions.Evidence suggesting that the working memory uses two completely different systems for dealing with verbal and visual information is that it is much harder to perform two verbal occupations at the same time because they interfere with each other and results in performance being reduced. The same applies to carrying out two visual businesss at the same time. However, a verbal processing and visual processing task can be completed at the same time because the information does not interfere. Furthermore, this supports the view that the sketch pad and phonological loop are two separate systems within the working memory.Gathercole and Baddeley (1993) also support the working memory model and they completed a lab study where people participating were divided into two groups. All of them had to complete a task which involved them sideline a moving spot of light. This would use the visuo-spatial sketchpad. At the sa me time as this was going on, one group also had to describe the angles on a letter, which was another task involving the visuo-spatial sketchpad. The other group meanwhile was given a second task that would involve and use the phonological loop and they were given a verbal task whilst following the light. The results were that Gathercole and Baddeley found the performance was way better in the participants completing tasks which used separate systems.Episodic bufferThe episodic buffer was added into the working memory model by Baddeley in 2000 after the model failed to explain the results of unlike experiments. It briefly stores information from the other subsystems, integrating it together, along with information from the long-term memory, resulting in complete scenes or episodes. It basically acts like a succour store which communicates with both the components of the working memory and the long-term memory.The episodic buffer is not limited to one sense only, unlike the other two slave systems. Its functions seems to weave visual memories, bind memories together and phonological memories into single episodes, which then become stored in the episodic long-term memory. The central executive chooses information from the phonological and the visuo-spatial sketchpad that go into the episodic buffer to then form an episode of memory. Along with this, the episodic buffer also appears to download episodes from the long-term memory, referring them to be analysed and possibly recalled to conscious memory.
Role Of Hemisphericity In Activating Teaching Style Education Essay
Role Of Hemisphericity In activating pedagogy Style fostering EssayThe most distinctive disport of modern conjunction is science based technology. The changes that occur as a result of the impact of its ar called as modernization. This modernization has affected doctrine . training in many ways. Modern takeing eruditeness is giving richness to students activity. It is called student centered approach. In a traditional gild the drive of teaching scaming acquirement of knowledge. But in modern society the main aim of teaching squ argon uping is non only acquisition of knowledge but also the awakening of curiosity, the stimulation of creativity the developing of proper interest, attitude and values and the building of essential skills such as independent psychoanalyse teaching education in the modern society is to keep pace with the effect of knowledge and skills.According to Dictionary of Education (2005, p.521) learnedness is the serve ofacquiring knowledge, skil ls and belief through experience. tuition takes part whenstudents interact with early(a)s and with environment by observing, talking, listeningdiscussing, writing and relating their own ideas and experiences with other(a)s.(Reddy,2006, p.11).Piagets (1964, p.17) describes eruditeness is subordinated to cultivation andnot vice versa. He explained development as the restless construction of knowledge and nurture as the passive formation of connector. He was interested in knowledgeconstruction and believes that cognitive development came forwardshand encyclopedism. According tohis view child bunsnot learn a concept before they argon cognitively put together. Here by the termcognitively ready he means development of child.Cognitive development takes place show snip gear then they become able to learn where as Vygotsky believed that development is an sp honestly process and it did not wait for readiness. Vygotsky, (1978, p.90) said properly organized encyclopaedism resu lts in mental development and sets in motion a cast of developmental process that would be impossible apart from attainment. He cut accomplishment as a tool in development. Learning pulls development up to higher level and social fundamental interaction is a get a line in learning. So in this way learning heap be defined as an several(prenominal) as well as socialactivity.Learning takes place as a result of experience. For character a first grade studentsings, twinkle twinkle little star and support grade student leaves hot spoonimmediately. First case is the example of learning while second case is not the exampleof learning, whats the rest betwixt the examples of learning and not learning? Thedifference is the experience. In other words the first grade students sort is the resultof his experience. He was not biologically programmed to sing twinkle twinkle littlestar and leaving hot spoon is reflexive activity.The learning is what students do, teaching is what the inst ructor stub teach. The cleansement in teaching can be demonstrated if thither is improvement in learning. As observed by prof.R.S. Adams and others students whitethorn learn what the instructor intended them to they may not. Teachers like others are fallible,then may not always teach correctly. It Follows them that in any learning situation students may learn correctly what the teacher taught incorrectly or may learn incorrectly what the teacher taught correctly or fortunately the opposites.1.2 TEACHING AND disciplineTeaching and Learning are interlinked. The teacher teaches and students learn. Teaching learning has tetrad aspects they are teacher, student, learning processfigure1.1 explained The process in the interaction between student and the teacherTeacher developmentPupilLearning growthand learning situation. The teacher creates the learning situation for the student. The process in the interaction between student and the teacher. This interaction is explained in the fi gure1.1Teaching learning is influenced by the totality of the learning environmental situation. This interaction is possible through terzetto way communication. This results is behavior changes in the disciple. This is diagrammatically explained in the figure1.2The teacher directing their students in eight step.* footmark 12 communication from the teacher to the learner.*Step 3 to 5 from learner to teacher.*Step 6 to 8 once again from teacher to learner.Through this 3 way communication teacher could teach is a linear manner. On the other hand learner can know how well his learning is progressing and how he can success in his way of learning.The teaching components and learning components are interlinked. Teaching objectives are booming only when the learning come incomes coincide within it. The components of teaching learning are given below.1.2.1.COMPONENTS OF LEARNING PROCESS*Task to be learned.*Characteristics of the task to be learned.* Characteristics of the learner.*Cond itions under which effective learning takes place.1.2.2.COMPONENTS OF TEACHING PROCESS*Instructional goals.* entry behavior.*Instructional procedures.*Performance assessment.1.3.ROLE OF BRAIN IN LEARNINGBrain engage research identifies the left whizz is the academic mentality. It is because educators generally empha size its process in a traditional class room. It has some limitations in learning on the other hand the right ace is the artistic mindset because it is the center for creative talents. Though science and medicines now give to a greater extent(prenominal) attention to these brain process, education has traditionally neglected the right side, learning half of a students brain potential under educated. Nowadays more school systems are using whole brain learning technique. The brain issue shows that learning can be flourished only when teachers make their students to meld use both sides of their brain is a lesson. For Example in Kg classes, Teachers who use music, D ance, Story telling, Drama or other right brain activities in their class which trigger the left brain students. Their learning capabilities can be increased but in the primary coil section the teacher can use traditional teaching which hack the right brain activities.When right brain teacher teaches left brain students it affects the achievement of the learner. So the teacher should be whole brained their only he can larn right brain and whole brain dominated students.The gift study has both phases.*First phase the matching between teaching and learning.* consequence phase Brain dominance of the students and teacher.1.4 STATEMENT OF THE PROBLEMThe problem for the present study is titled as compatibility between teaching expression and learning style with reference to hemisphericity.1.5 OPERATIONAL DEFINITION OF KEY TERMSTeaching StyleTeaching Style defined by Fisher and Fisher(1979) as a pervasive way of approaching the learners that might be unvarying with several modes of teachingGregorc(1979) Teaching Style consists of an instructors somebodyal behavior and the media utilise to transmit or receive data to or from the learner.LEARNING musical modeCornett defined learning style as a a ordered pattern of behavior but with a certain range of individual variability.Geogorc and Ward (1977) stated that learning style consists of distinctive and observable behavior that provides clues about the mediation abilities of individuals. In operational terms ,people through their mark sets of behavior tell us how their mind related to the world and and so how they learn.COMPATIBILITYMatching is defined in terms of compatibility the interactive effects of person and environment (Hunt 1979)HEMISPHERICITYHemisphericity is the cerebral dominance of an individual is retaining the treat mode of learning in his own style of learning and thinking.(Venkatraman 1989)Researcher conducted during the last two decades have shown that the human left cerebral hemisphere is t o be specialized for primarily verbal, analytic, abstract, temporal and digital operations (Bogey 1969,Gazzaninga 1970, Ornstein 1972).The same investigation revealed that the right cerebral hemisphere is to be specializes for primarily non verbal holistic, concrete, creative, analogical and aesthetical function. For identifying the hemisphere dominance the ways in which and levels at which the information is being proceed by the individual are to be studied.1.6 OBJECTIVES OF THES STUDY*The primary objective of the study is to search the compatibility between teaching style and learning style and its influence on academic achievement with regards to hemisphericity.* The Secondary objectives are the following.A) To find out the difference in the learning style of the students with delight in to demographic variables.B) To find out the differences in the teaching style of the teacher with regards demographic variables.C) To find out the descent between learning style and informa tion processing style if the students.D) To find out the relationship between the teaching style and brain dominance of the teacher.E) To find out the relationship between learning style and achievement score of the students.F) To find out the relationship between learning style and teaching style and achievement score.1.7 VARIABLES OF THE STUDYA) Independent Variables(i) Teaching Style(ii) Learning Style(iii) tuition Processing Style(iv) SolatB) Dependent VariableAchievement Score1.8. importation OF THE STUDYLearning style is a consistent way of execution which reflects cultural behavior patterns. These may be revised as a result of training or changes in learning experiences According to Reid(1987100) learning styles are thus moderately strong habits rather than intractable biological attributes.In all academic classrooms there will be students with multiple learning styles, and students with major, minor and negative learning styles. Teachers are accommodating these learning s tyles and to sustain changes in their own teaching style and provide a potpourri of activities for them only teachers can meet out needs of different learning styles of students.In a class where mismatch occur the students tend to bores and inactive, inattentive, do poorly on tests get discouraged about the course. They may cerebrate that they are not good at the subjects of the course and give up. To reduce teacher student style conflicts some researchers in the sector of learning styles be matched. KUMARA VADIVELU (199198) states that the narrower the gap between teacher intervention and learner adaptation , the greater are the chances of achieving desires learning outcomes.Effective matching between teaching style and learning style can be achieved only when teachers are aware of their learners needs, capacities, potentialities and learning style preferences in meeting these needs.It has been the researchers experience as a teacher may learners fail to achieve an acceptable level of success in achievements tests. Is it possible that some students are failing to be successful at school because teaching methods do not furnish for their learning style?Investigator much of reading on this depicted object suggest that the boredom, lack of success and frustration of students experiences t school could be due to incongruence between teaching strategy of teacher and their preferred learning styles.This inherent problem gave rise to the idea for this researcher topic. It was thus innate(p) out of a desire to provide teachers with an alternative approach to improve the learning productivity of their students.1.9 LIMITATIONS OF THE STUDYThe present study has demarcated with the following limitations*The time frame the data collection phase of the research was conducted over a periods of 12 weeks.*Level of intelligence and relevant previous knowledge of the learner could also have had as effect on the result of the study.* surface of the sample. The limited num ber of the population and hence the small sample size could have influenced the degree to which the findings of the research can be generalized to other population.*This is only a precise product study in the area of learning and teaching style.*Due to laborious calculations, only certain variables are studied in this investigation.* The study is limited to the pupils of class ix only.*The study is limited to kancheepuram and Chennai district only.1.10 CHAPTERIZATIONThe study is organized into half-dozen chapters for easy intelligence flexible discussion in statistical results.CHAPTER IThe first chapter flesh out about the problem of the study, objectives, significance and scope of the studyCHAPTER IIIt deals with setting of the study.It explores about teaching style,learning style,brain study,compatibility between teaching style and learning style,information processing , and solatCHAPTER IIIIt deals with the review of related literature in the present investigation.It explore I ndian reviews and international reviewsCHAPTER IVThe fourth chapter explores the methodology of the study, the statement of the problem, need, hypothesis, variables, studies, method of research, construction of tools , collection of data and statistical techniques used in compend of data are presented.CHAPTER VThis chapter incorporate with descriptive statistics,differential analysis association analysis,correlation analysis and conclusion.CHAPTER VIIt is connected with summary, major findings , conclusions, recommendations and suggestions for further study.Bibliography and Appendices are wrap at the end of the thesis.Thus the finding is detailed in six chaptersr.
Monday, April 1, 2019
Social Media in Business and Society
moveionate Media in Business and SocietyMost ecesiss scat to look upon neighborly media as a threat, where some change surface pick knocked out(p) to ban the usage from the cash in ones chipsplace altogether. The idea rump it cosmos that employees would be given the opportunity to waste time online, chat, and possibly pose as a security threat to the organization. (Turban, 2011)(Smith, 2010) outlines risk of employees mixer media phthisis at sour, these whoremonger be both intentional or not and they could fill to legal and reputational risks for governments. These study been categorised as three main problems utilize of well-disposed media washbasinnot be in full regulated, superintended or controlled thus organisations argon freehand up control.Social media is a world child exchangeable means of communication, once a disconfirming situation is online its entirely a matter of time public treasury it goes viral thus r each(prenominal)ing competitors, regulat ors and customers.Social media is emotional and employees can articulate their feelings of happiness and/or frustration.Furtherto a greater extent, (Flynn, 2012) identifies the risks of having employees participating in tender media by do reputational damage, propel lawsuits, ca habit humiliation, crush credibility, destroy careers, create electronic traffic records, and backsheesh to productivity losses.(Dreher, 2014) argues that social media is not to be feared, except instead embraced and seen as an opportunity where employees can act as corporate advocates and rat ambassadors. If e genuinelything, it helps employees keep up to date with latest news crosstie up to the patience together with continuous fellowship development. nonetheless, even though there are many studies that point out the benefits of social media, there is still no clear-cut decision whether it can influence fit per constituteance or whether it can fuel the social capital of the employees and help in knowledge transfer (Zhang, 2016).However, it cannot be denied that e very organisation allowing social media at travel go away al shipway cede its picturesque deal of challenges to overcome. (Eliane Bucher, 2013) speaks approximately the wellness issues that can be encountered. Starting off with stating that there is so some(prenominal) nurture available on social media that professionals may face in fix upion overload. Not to mention the mix of ply intent with private life overlapping with social media.New techno enteries should im institute workers efficiency and reduce stress levels however often the opposite occurs (Eliane Bucher, 2013). Technostress as referred to by (Brod, 1984). To be booming in the social media environment one needs to overcome the to a lower place 3 points oppositewise technostress is formedTechno-overload Increase in workload which could be actual or perceived.Techno-invasion Social media enables people to be unceasingly committed from almost every device. This can lead to the feeling of the need to be connected or online ca employ reduction in family time allowing work issues to invade the private life (Eliane Bucher, 2013).Techno-uncertainty Social media is constantly changing and consequently brings with it uncertainty as regards to what technologies and skills are needed to perform the job and what will they be in the future.Social media comes with many legal issues tied to it. These exercise up from pre-employment to post employment. Wrong usage of social media will for sure enough lead to waste of time, inefficiency, reputation issues and shun image for the organisation. Some of the laws are defined below by (Lieber, 2011)Employment Laws by tagging co-workers in certain provocative photos or videos,Defamation and Libel Laws by stating certain comments on co-workers or employers thus effecting their reputation., As press outd in (Trott, 2009) a Microsoft Survey present up that 41% of employers ground their decision of not hiring an applicant found on what they found online in relation to their reputation. This is also known as Netrep. This constitutes a legal risk of discrimination in itself if the recruiter is basing decision on the netrep. seemly Credit Reporting Act by having interviewers friending an applicant on Facebook to dramatize more schooling than is required for the job applied.Health Insurance Portability and answerableness Act by having a medical professional LinkIn with a patient. equal Trade Secrets Act by having employees discussing or commenting on social media about company internal only discussions or non-public projects.Employers can monitor the economic consumption of social media at work if the employees are informed in advance. disciplinary actions can be scratchn once any abuse is world noticed. Policies should include what is allowed and what is chooseed as abuse (Trott, 2009).If the employees post on their personal accounts out-of-doo r of office hours and such(prenominal)(prenominal) posts are in relation to work having a negatively charged impact in some way to the employer or the organisation then there is still grounds for disciplinary action even though employees try to advocate for respect for private and family life, home and remainder (article 8) or freedom of expression (article 10) from the Human propers Act 1998.As discussed above, social media has its advantages and disadvantages and seeing that social media is here to stay organisations cast little choices allowd to accept the new reality, address it and learn how to realise good use of it. (Lieber, 2011), among others, identifies the adjacent criteria that any organisation willing to harness social media essential addressThe creation and enforcement of solid social media policies within the organisations personnel addressing fair use, access during work time and general behaviour on social media (even during personal time).Directly utiliz e social media for the benefit of the organisation such as for recruitment, marketing and investigating competing organizations.Monitoring of chance on social ne t plant to entropy mine nurture regarding your organisation (and potentially others as well), possibly exploitation automated algorithmic rules and software system for uttermost efficiency and accuracy.From the above-mentioned criteria, the first two deal with human resource nerve of social media where organizations lay out guidelines to their employees on how to use them, and they as the organizations can use social media without delay for recruitment, marketing etc. However, as the third criteria suggests, to make most use of social entanglements organizations must make sure that any teaching/selective information organism released on such platforms, is gathered and utilise effectively.It is important that an organization is everlastingly aware of what the average user is saying about their brand, effect ively getting the general feel or mood succession analysing the trends crosswise time. The same principle could be applied to monitor competitors possibly for cause identifying any weak products which the competitors have and having your own similar product take advantage of the situation.Effective monitor comes from generating good selective information. Data mining involves the following steps to make info nubful for observe (Raghav Bali, 2016)Removing un fateed information and noiseTransformation of the raw info into data that can be used for further processingStudy the data and come up with patterns that can give further insight to our dataRepresent the data in a way that is useful to companies or to who the data intend for.There are different data mining techniques which can be used to monitor social media use. Social media is a form of real time communication w and then an effective monitoring alikel needs to monitor and provide alerts as things happen. Most school schoolbookual matter mining digs make use of search engines to go done social media sites and collect information related to the primordial haggle or interests. (Mark My Words article)Text Analytics (Text/Data archeological site) Text analytics involves a complex and elaborate number of steps to strip down conversations into abstract row and analyse the way these words are being used, verificatory or negative and even derive patterns from collected data.When we search for a movie and receive some other movie recommendations that technique is using text mining.Text Mining is make up of Data Mining (Information retrieval, Natural Language Processing Machine learning) + Text Data (Emails, Tweets, parole Articles, Websites, Blogs etc.) physical body 1 Text Mining (Charu C. Aggarwal, 2012)As expressd in simulacrum 1, Stop Word Removal and Stemming eliminate the generic and less meaningful words form a phrase, this helps categorizing different words with same meaning as see, s een and being seen.Bag of Words (BOW) is having words separated from the judgment of conviction and each word having a numerical value which represents its importance.Limitations(Charu C. Aggarwal, 2012) outlines several barrierations that can be observed and future in-depth query is requiredThe real-time posts on social media are a very important resource as mining data in real time as it is being posted can yield many advantages. This however remains a challenge for when these posts are not conducted from work computers or from outside work.Social media is very unstructured and some applications like twitter even curb the amount of characters per post. This brings about problems of text recognition when short length words are used like gnite gr8 etc.Social media allows different ways to express opinions or emotions these could be through images, videos and tags making the text analytics such(prenominal) more complex and thorny in its pre-processing stage.Method 1Keyword loo k for (Rappaport, 2010)Organisations can decide which keywords they want to monitor, these may be chosen base on what is important for that company, it could be their products or emotional states. Social media is a very unstructured place containing noise and unwanted data for our data mining process. This form of search is good to capture keywords and try and form a meaning of these words and the frequency used however its very hard to come up with what is the users intent. For that reason, we then consider a more complex search mode called theory Analysis.Method 2Sentiment Analysis and Emotion AnalysisSentiment Analysis is the process of identifying archetype in text and analyse it. There are three types of vox populi outline (Walaa Medhat, 2014)Document Level Analyse the entire document as one topic and form an opinion or sentiment on the entire documentSentence Level Analyse sentiment in each sentenceAspect Level Analyse sentiment in respect to entities as you can have more than one aspect in a sentence for the same entity.For this study, we are focusing our research on Sentence Level abridgment using semantic search.Semantic SearchSemantic search goes beyond the traditional keyword search by providing a meaning to a phrase and makes use of a wide range of resources to interpret the phrase and thus providing a more perfect result.Some morals of semantic search in our daily livesConversational searches pick up 2 Conversational Search (Google, 2017)Auto Correct spelling mistakesFigure 3 Auto Correct (Google, 2017)Display information in fine art formatFigure 4 Information in graphics format (Google, 2017)(Charu C. Aggarwal, 2012) outlines some challenges that are encountered when going through mining. These are the difficulty in recognising opinions, subjective phrases and emotions.Opinion mining challenges.When using semantic search method on a post one needs to understand that the post can contain all the followingPositive opinions I like the c omputer I bought, it has a very clear screen disallow opinions however my wife thinks its too expensiveDifferent targets The targets in the official opinions relate to the computer and the screen whereas the targets in the negative opinions are the costDifferent opinion make believeers The supreme opinions are mine however the negative opinions are of my wifeSubjectivity mining challengesPosts are also make up of objective and subjective comments. Subjective expressions like opinions, desire, assumptions amongst others may not contain opinions or may not express any positive or negative comments.Emotions mining challengesEmotions (love, joy, anger, fear, sadness, happiness and more) fall under a form of subjective expression. Sometimes emotions give no opinions in a phrase.To observe the usefulness and ideal approach towards the analysis of social media related posts and messaging, a software algorithm was designed and partially developed to exposit this scenario. The idea behi nd this software is to have the user write intimate a textbox, mimicking an actual employee typing using a company machine, while the system monitors such text and acts per what it registers. Therefore, this tool will be presented as a standalone software/algorithm concept, emulating an actual occupation of a executable employee, and as such must be adapted accordingly to make use of it in a real-life situation.The basic principle of the solution proposed is made up of three modulesThe key gent that monitors the users excitant at runtime and effectuate certain rulesThe keyword and semantic analysis on the data gatheredThe terminus of produced analysis and logThe following flowchart outlines the lifecycle of express solution, followed by a fine analysis of each component mentioned above, as well as possible ways on how it can be further compound to produce even more accurate results.The flow of the proposed solution.Created using draw.io (https//www.draw.io/) hive away and Processing DataIn this solution, key logging is used to monitor the data inputted by the user, which is a constant monitoring of the keystrokes registered by ones activity, and registered as a stream of text ready to be dissected and analysed as required. The main advantage of using such a strategy is that data is collected and used in real-time, making it ideal for scenarios where an alarm (for recitation a negative post related to work) needs to be raised as quickly as possible to the relevant personnel, providing a detailed log of what the employee has typed (through the key logger) eliminating the need to monitor and access the relevant social media to have got what has been posted. set there are other strategies one can pursuit to monitor the users activity, such as firewall policies or general network surveillance, however in real-life situations such solutions can prove preferably difficult to setup due to the expertise required while web encoding and proxy services ma kes it even harder to effectively monitor the traffic generated by the users. A key logger, even if effective, generates a lot of unneeded drivel beyond the orbital cavity of social media. For example, an employee working on his station would be constantly registering keystrokes which the logger is then adding them up to its own text stream. This could prove to be very problematic for three main reasonsThe logger would take down to amass a significant amount of storage space, unless the key logger is given a limit of how much information it can hold and removing old data to make up space for the new data, alone than some information can get permanently lost.The analysis of the text stream generated can be quite intensive, which can significantly affect the performance of the machine doing the analysis, especially when considering that the analysis is assumed to be tasteful on the users machine which most probably isnt very well worthy for such intensive work. Furthermore, follo wing the previous point, the garbage log is being analysed too needlessly.The chances are that an employee would spend very little time on social media, thus logging and analysing the work-related activity is quite pointless for such a scope.To overcome the above-mentioned issues, the proposed solution makes use of predefined social media trigger keywords i.e. a list of social media websites such as Facebook, Twitter, LinkedIn etc., where depending on such triggers being hit or not, the key logger will have two states, passive monitoring and dynamical monitoring.When the tool is running normally, the key logger is in a passive state keeping only the last 30 characters in its memory, without processing the stream. The only thing it does however, is to constantly check the stream read from the textbox in the tool against the trigger keywords, and if any of the keywords is found to have been registered then the key logger would go into active state. While in this state the key logger would increase its maximum capacity, and begin to log every keystroke while constantly analysing the feed. The key logger will go back to passive state when the predefined character limit is reached or enough time has passed.Following this logic, only a set of keystrokes would be registered, reducing the chance of collecting and processing unneeded information while maintaining the workload and storage use of the machine to a minimum.Note in this approach once the key logger goes into active state, it is monitoring and analysing the feed at runtime locally, and this could prove to be quite intensive depending on the parameters set and the overall performance of the users machines. Organizations implementing this solution can opt to have the log analysed after the key loggers goes back into passive state and consequently analysing the data only once. Better yet, since the solution assumes that the key logger is analysing the data locally, instead the logs can be sent to a common ho rde and be analysed as a scheduled task.Once this data is captured through the key logger the feed can be processed by means of the methods discussed earlier (Method 1 and 2). Based on the outcome we store the data in our information system and align the data base on the organisations social policy.Approaching data analysis using keyword and semantic methodsThe designed software makes use of two different types of analysis algorithms, keyword based and semantic based, and are used together to try and cancel each others limitations and thus providing much more accurate results.Keyword based analysisThe more traditional keyword analysis algorithm consists of having a list of keywords i.e. a predefined set of texts, and hit the data to be analysed against that list to determine whether any keywords have been hit and at what frequency. For example, having a text (representing the data) analysed against a list of negative texts (the keywords) would provide a set of statistical informat ion which could be used to evaluate how negative the text is, which is conceptually what a social media monitoring tool should be trying to achieve.However, the major flaw of this analysis algorithm within the context of social media monitoring, is that keyword based analysis is far too broad and prone to false alarms if not controlled. Having the data gathered from the key logger (therefore filtered to social media activity) analysed against a set of negative texts, the statistical information produced may not be relevant to the organizations interest. An employee could simply be visiting card a feed about how bad the weather is and how much s/he hates it, which the keyword analysis algorithm would recognize as negative and comprehend accordingly.In the proposed solution, the keyword based algorithm uses two different sets of keywords against the gathered data, with the site to filter the batches of logged texts by relevance. The first set consists of a list of works related tex t, such as work, job, company, company name etc. i.e. every keyword that could somehow link the user to the organization implementing the solution. In the second set, a list of keywords/texts associated with negativeness are stored, such as bored, unhappy, hate, dull, sick and weary etc.When the data passed along through the key logger reaches the keyword analysis module, it would first check the log against the first set and therefore determine whether the data ply is of any relevance to work, and if not simply do nothing. On the other hand, if any of the keywords from the first set is hit, it means that the data inputted is relevant and therefore must be analysed further. In this case, the tool would analyse the entire log within the key logger (which is currently in an active state as described in the previous section) and extract the statistical information with regards to the second set.The flow of the full keyword based algorithm adapted in the toolCreated using draw.io (ht tps//www.draw.io/)ExamplesKeywords to assumeFirst Set (work) WORK, JOB split second Set (negative) BORED, disquieted, SAD, HATE, DULL, TIRED, SICK AND TIRED, ANNOYED, FED UPExample 1 gossip shun this weather, its severely effecting my mood. forever and a day feeling tired and sad. takingsNoneExample 2 stimulusAt work and bored. Wish I could find a infract job, this one is middling so annoying.OutputBORED x 1full logExample 3Input neer a dull second gear at work. At the end of the day, the prudence brought in pizzas, fresh doughnuts and beer. In a orthodontic braces of hours, the food was foregone leaving everyone too tired to move. Got to love this company, always making sure their employees are never bored and unhappy.OutputDULL x 1TIRED x 1BORED x 1UNHAPPY x 1full logFrom the examples above one can note a few limitations concerning the keyword based analysis algorithm.In example 2 the logged text is alarming, which most probably would require the full attention of the resp onsible personnel, only when due to the limited keywords, only a single piece of text was hit which would make the output seem not so alarming. Furthermore, the logged text had the word annoying which in the negative keyword set is listed as annoyed, but still this was not captured. Therefore, this means that this algorithm is highly dependent on the keywords lists and possible deviations of each text.In example 3 the output looks very alarming since the negative keywords list was hit 4 times, but the input is very positive. The algorithm was unable to take into consideration the context of how the negative words were used and simply counted the number of times they were encountered within the log, hence raising a false alarm.To overcome such limitations, other algorithms must be used in conjunction with the keyword based, where in this solution the semantic based approach is used to compliment the algorithm and try to provide more accurate results.Semantic based analysisAs explain ed in previous sections, semantic analysis introduces a certain degree of reason when analysing a given text, and this is achieved by giving meaning to what it is fed. In this proposed software algorithm, this type of analysis is used to evaluate the sentiment and emotion behind the fed input, and therefore can determine whether the users work related activity on social media is negative or positive, which by extension may be able to overcome the limitations of keyword based approach.Basic forms of semantic based algorithms used to analyse text in relation to sentiment and emotion, often providing a single value output denoted by a percentage, where 0% means that the text is absolutely negative and a cytosine% would indicate that without a doubt it is positive. However, semantic analysis is capable to go beyond a simple value, where some of which can produce a fully detailed report indicating the level of emotions for multiple types, such as anger, veneration and joy. The followi ng is an example of such a report produced by the tool Tone Analyser offered by (Cloud, 2017).Example report of a semantic based algorithm offered by IBM Watson Developer CloudApplying such an algorithm which produces a very detailed report, may be well beyond the scope of monitoring work related activity on social media. In the end, what the proposed solution is trying to achieve is to detect negative activity which would terms said organizations, that when detected, the log of that activity is passed along to the corresponding personnel with possibly a brief report of the analysis.Another drawback to be considered in this scenario, is that wake weight semantic algorithms are much less intensive than algorithms which consider different types of emotions when analysing a text, and given that in the solution such an analysis will be triggered almost constantly, having a heavy algorithm being triggered would result in a very negative experience to said users. This is why in the pro posed solution a lighter semantic analysis is considered, that is the API provided by (ParallelDots, 2017).Note one could argue that using a semantic analysis algorithm which produces a detailed report, could replace the entire algorithm which is using both the keyword based analysis and the light weight semantic based analysis. However, performance wise the latter would operate much smoother, and from a technical point of view considerably easier to setup. Note in the proposed solution, the semantic analysis will be conditional to whether the keyword based algorithm is triggered or not, and therefore subject to the filter which is detecting whether the activity on social media is related to work or not.Examples using the sentiment analysis display provided by (ParallelDots, 2017), which outputs single value percentages 0% being negative, while 100% being positive.Example 1InputHate this weather, its severely effecting my mood. Constantly feeling tired and sad.Output0%Example 2Inpu tAt work and bored. Wish I could find a better job, this one is just so annoying.Output6%Example 3InputNever a dull moment at work. At the end of the day, the management brought in pizzas, fresh doughnuts and beer. In a couple of hours, the food was gone leaving everyone too tired to move. Got to love this company, always making sure their employees are never bored and unhappy.Output79%Classifying severity based on score and frequency of words thus far, the algorithm detected negative activity on social media relating to work, using both keywords and semantic analysis. However, the term negative can be rather broad and it may be the case that the organization would not want to be alerted for every minor negative activity, since that will become counterproductive. As such the proposed algorithm has a door mechanism which determines whether to send in alerts or not.The threshold settings are two. The minimum number of negative words the activity must contain, and the minimum percenta ge of negativity to be considered. Right after the key logger is finished monitoring the social media activity, if work related activity is logged, the system evaluates the log based on the threshold set by the administrators of the system, and proceed accordingly.Using same parameters of previous example for keyword and semantic based approaches. The thresholds are set as follows stripped Keywords 1, Minimum Semantic Percentage 30%.Example 1InputHate this weather, its severely effecting my mood. Constantly feeling tired and sad.OutputNone (not work related) spruceNoExample 2InputAt work and bored. Wish I could find a better job, this one is just so annoying.OutputKeywords hit 1Semantic 6%AlertYesExample 3InputNever a dull moment at work. At the end of the day, the management brought in pizzas, fresh doughnuts and beer. In a couple of hours, the food was gone leaving everyone too tired to move. Got to love this comp
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